1)sand gravel filter,砂礫過濾機2)sand filter,砂礫過濾器3)sand and gravel filter,砂礫石過濾器4)rapid sand filter,快速砂礫過濾器5)gravel and sand filter bed,砂礫濾床6)machine-made gravel sand,機制礫砂
用法和例句
With the extensive using of the machine-made sand and shotcrete in engineering, the application of the machine-made gravel sand shotcrete is emphasized by constructor.
